BMW 4 Series Convertible vs Toyota bZ4X

A proper head-to-head in South Africa — compare price, performance, fuel economy or electric range, safety and the details that shape long-term ownership.

BMW 4 Series Convertible in South Africa

BMW 4 Series Convertible

M440i xDrive Convertible Petrol 8-Speed Automatic Current
ZAR 1,642,500 ex-showroom
⚡ 285 kW 🔧 500 Nm ⛽ 12.5 km/l
VS
Toyota bZ4X in South Africa

Toyota bZ4X

bZ4X AWD Electric Single-Speed Reduction Gear Current
ZAR 1,182,800 ex-showroom
⚡ 255 kW 🔧 269 Nm
＋ Add a 3rd car

Decision summary

BMW 4 Series Convertible vs Toyota bZ4X: the short answer

4 Series Convertible and bZ4X are close on the comparable published fields, so buyer priorities should decide.

4 Series Convertible starts ZAR 36,300 cheaper 4 Series Convertible from ZAR 1,146,500 · bZ4X from ZAR 1,182,800

Five key differences

Exact selected derivatives
Specification 4 Series Convertible bZ4X
Maximum Power 4 Series Convertible285 kW bZ4X255.3 kW
Maximum Torque 4 Series Convertible500 Nm @ 1800-5000 rpm bZ4X268.6 Nm
Engine Size 4 Series Convertible2998 cc bZ4XNot Applicable
Combined Fuel Economy 4 Series Convertible12.5 km/l bZ4XNot Applicable
Ground Clearance 4 Series Convertible140 mm bZ4X212 mm

Strongest published figure in that row; no road-test winner is implied.

Independent editorial assessment

Hagalu editorial ratings

When a variant is selected, its rating out of five applies only to that exact derivative; a model-range review is not inherited. Editorial ratings are separate from the Specification Evidence Index out of 100 and are not customer ratings.

BMW 4 Series Convertible

M440i xDrive Convertible

Hagalu editorial rating
3.7/5

Desk research · Exact variant

Hagalu Editorial Team ·

Editorial assessment, not a customer rating. Not road-tested for this review.

Read the review and score breakdown

Toyota bZ4X

bZ4X AWD

Hagalu editorial rating Not yet rated

No complete editorial rating is published for this exact variant. This is not a zero score.

How Hagalu rates cars

Not yet rated means a complete review is not published; it does not mean the vehicle scored zero. Read the rating methodology.

What Each Car Gets Right (and Wrong)

4 Series Convertible

Strengths
  • More powerful engine output
Weak Spots
  • Lower fuel efficiency
  • Fewer listed safety features
  • Lower published practicality figures
Best suited to: Published Performance
Specification evidence leader

bZ4X

Strengths
  • Better fuel efficiency
  • Stronger listed safety equipment
  • Stronger published practicality figures
Weak Spots
  • Less powerful engine setup
Best suited to: Published Efficiency Published Practicality

Which One's Right for You?

4 Series Convertible

  • Buyers prioritising the stronger published powertrain figures

bZ4X

  • Buyers prioritising the lower published fuel or energy use
  • Buyers prioritising the more complete listed safety equipment
  • Buyers prioritising the stronger published space and capacity figures

Full Specs, Side by Side

Spec 4 Series Convertible bZ4X
Model Introduced Year 2020 2026
Generation G23 four-seat premium convertible related to the G22 Coupé but with body- and roof-specific packaging. South African launch specification of Toyota's dedicated battery-electric bZ4X
Facelift History Current updated G23-generation BMW 4 Series Convertible offered in South Africa with a fabric soft top. Introduced locally in 2026 as Toyota South Africa's first battery-electric production model
Facelift Launched Since Original current-generation version Introduced locally in 2026 as Toyota South Africa's first battery-electric production model
Facelift Version Ending Current Current South African 2026 specification
Body Style Convertible SUV
Model Year 2026 2026
Production Status active active
Segment Premium Convertible SUV
Vehicle Type Car SUV
Spec 4 Series Convertible bZ4X
Length 4770 mm 1 mm
Width 1852 mm 1 mm
Height 1394 mm 1 mm
Wheelbase 2851 mm 1 mm
Ground Clearance (Default) 140 mm 212 mm
Ground Clearance (With Full Seating Load) 125 mm 125 mm
Fuel Tank Capacity 59 l 50 l
Boot/Cargo Space 385 l 484 l
Kerb Weight 1965 kg 1556 kg
Gross Vehicle Weight (GVW) 2375 kg 2052 kg
Payload Capacity 485 kg 449 kg
Towing Capacity 1800 kg 750 kg
Seating Capacity 4 seats 5 seats
Number of Rows 2 rows 2 rows
Doors 2 doors 5 doors
Minimum Turning Radius 5.6 m 5.6 m
Front Headroom 997 mm 1000 mm
Rear Headroom 942 mm 942 mm
Front Legroom 1049 mm 1035 mm
Rear Legroom 899 mm 882 mm

In depth: how these cars differ

This 4 Series Convertible and bZ4X comparison uses the exact derivatives selected above for South Africa. The catalogue index covers performance, efficiency, safety equipment, practicality and ownership cover only where comparable source-backed fields are present.

Performance index: 4 Series Convertible 97 vs bZ4X 82.

Efficiency index: 4 Series Convertible 49 vs bZ4X 91.

Safety-equipment index: 4 Series Convertible 92 vs bZ4X 94.

Practicality index: 4 Series Convertible 55 vs bZ4X 62.

Ownership-cover index: 4 Series Convertible not separately scored vs bZ4X not separately scored.

These figures are Hagalu catalogue-comparison indicators, not customer ratings, crash-test scores, resale guarantees or a substitute for a road test. Each page shows its weighted source coverage beside the result.

Specification Evidence Index

A transparent comparison of published catalogue fields. This is not a road-test score, owner rating or editorial review rating, and it appears only when every vehicle clears the same comparable-data threshold.

Evidence / 100
Evidence-index readout

bZ4X leads by 7 points

4 Series Convertible and bZ4X are close on the comparable published fields, so buyer priorities should decide.

Evidence leader 82 /100
Lead 7 points
Data 61% source coverage
82
#1 Evidence leader

bZ4X

61% source coverage 3 strong categories
Best at Safety 94 Check Practicality 62
Performance 82
Efficiency 91
Safety 94
Practicality 62
Leads by 7 points
75
#2

4 Series Convertible

83% source coverage 2 strong categories
Best at Performance 97 Check Efficiency 49
Performance 97
Efficiency 49
Safety 92
Practicality 55
Performance 24% Safety 22% Practicality 22% Efficiency 17% Ownership 15%
Category leaders What moves the verdict
Performance 4 Series Convertible +15 Efficiency bZ4X +42 Safety bZ4X +2 Practicality bZ4X +7

Close catalogue match. Buyer priorities should decide the outcome.

Why this score View full breakdown
Evidence-index leader

bZ4X

Performance 82/100
Efficiency 91/100
Safety 94/100
Practicality 62/100

4 Series Convertible

Performance 97/100
Efficiency 49/100
Safety 92/100
Practicality 55/100

What the evidence means

Evidence index Toyota bZ4X leads the specification evidence index with 82 pts vs 75 pts for 4 Series Convertible

In Hagalu's specification evidence index, bZ4X leads. However, 4 Series Convertible may suit buyers prioritising different confirmed fields. Ultimately, the right choice depends on your driving priorities in South Africa.

Related comparisons

Continue with closely related South Africa models and comparable body styles.

4 Series Convertible
4 Series Convertible
VS
Tank 500
Tank 500
4 Series Convertible vs Tank 500 →
4 Series Convertible
4 Series Convertible
VS
X4
X4
4 Series Convertible vs X4 →
4 Series Convertible
4 Series Convertible
VS
iX1
iX1
4 Series Convertible vs iX1 →
4 Series Convertible
4 Series Convertible
VS
SEALION 7
SEALION 7
4 Series Convertible vs SEALION 7 →
4 Series Convertible
4 Series Convertible
VS
Santa Fe Hybrid
Santa Fe Hybrid
4 Series Convertible vs Santa Fe Hybrid →
4 Series Convertible
4 Series Convertible
VS
NX
NX
4 Series Convertible vs NX →
bZ4X
bZ4X
VS
Tank 500
Tank 500
bZ4X vs Tank 500 →
bZ4X
bZ4X
VS
X4
X4
bZ4X vs X4 →

4 Series Convertible vs bZ4X questions

There is no universal winner. Use the comparison table to match the models and available derivatives in South Africa on price, safety equipment, space, powertrain and ownership cover. The category indicators summarise published catalogue data; they are not a road test or customer rating.

Compare the published consumption or mileage rows for the exact derivatives using the same unit and test basis. A catalogue figure is useful for like-for-like comparison, but traffic, speed, load, weather and driving style can change actual fuel use.

Compare only equipment explicitly listed for each derivative, including airbags, stability control and driver-assistance systems. Confirm the exact trim with the manufacturer, and treat any independent crash-test result separately because equipment and ratings can differ by market.

A reliable five-year total cannot be calculated from catalogue data alone. Add the exact purchase and finance cost, fuel or electricity, insurance quotes, scheduled servicing, tyres and expected resale value. Check whether the selected derivative includes a service or maintenance plan.

Use the seating, boot or load-space, ISOFIX and safety rows as a first check. Then test the exact cars with your child seats, passengers and typical luggage, because published dimensions do not show every access or comfort difference.

Compare the published power, torque and 0–100 km/h rows when they are available for both exact derivatives. Vehicle weight, gearing and power delivery also matter, so catalogue outputs alone do not establish real-world overtaking or response.